A number is divisible by 8
If its last 3 digits are divisible by 8
Example
9216
Last 3 digits = 216
216 is divisible by 8
So, 9216 is divisible by 8
2104
Last 3 digits = 104
Since 104 is divisible by 8
So 2104 is divisible by 8
2000
Last 3 digits = 000
= 0
And 0 is divisible by any number
∴ 0 is divisible by 8 (as 0/8 = 0 Remainder is 0)
Thus, 2000 is divisible by 8
1416
Last 3 digits = 416
Since 416 is divisible by 8
∴ 1416 is divisible by 8